Teflon was accidently discovered by scientist Dr. Roy Plunkett while he was conducting a coolant gas experiment in 1938.

The world's first underground was the London Underground in1863. It has 275 stations and 253 miles of track.

A woman was chewing what was left of her chocolate bar when she entered a Metro station in Washington DC. She was arrested and handcuffed; eating is prohibited in Metro stations.

AMAZING FACTS